Weighing scale



FIG. 1 is a top plan view of the weighing scale showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 4 is a front side elevational view thereof;

FIG. 5 is a rear side elevational view thereof; and

FIG. 6 is a top and right front perspective view thereof. 

The ornamental design for a weighing scale, as shown and described. 